NLR190 is a spherical harmonic model to degree and order 24 based on approximately 5 million Eros radii collected by the NLR through day 190, year 2000. Because of its deviation from sphericity, on Eros one degree varies from about 54 to 307 m.
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Shape** | Mean radius, C_0,0 (m) | Mean equatorial radius (m) | North polar radius (m) | South polar radius (m) | Maximum equatorial radius (m) | Minimum equatorial radius (m) | Volume (km^3) |
Topography** | |||
Normalized spherical harmonic coefficients | C_1,0 | C_1,1 | S_1,1 | C_2,0 | C_2,1 | S_2,1 | C_2,2 | S_2,2 |
Offset of center of figure from center of mass*** | Dx | Dy | Dz |
Direction of rotation axis** | Right ascension (deg) | Declination (deg) | |
Rotation** | dtheta/dt (deg/day) | W_o | |
Gravity field** | |||
Normalized spherical harmonic coefficients | C_2,0 | C_2,1 | S_2,1 | C_2,2 | S_2,2 | C_3,0 | C_3,1 | S_3,1 | C_3,2 | S_3,2 | C_3,3 | S_3,3 |
**From joint inversion of Doppler tracking and altimetry.
***From numerical integration of shape model NLR190.
Direct inquiries to: zuber@mit.edu